this is abc news, afghanistan. >>> it was in afghanistan that one soldier displayed great courage and today president obama annualed his sacrifice. >> we present our nation hig highest milt tear decoration the medal of honor to an extraordinary american soldier. sergeant first class le roy peter. >> the sergeant was severely wounded shot in both legs looking at a live grenade that could hurt his fellow soldiers. john donovan on what he did next. >> above and beyond. that's where le roy peter went in may 2008. afghanistan. seventh tour of duty. these pictures from before he found out what he was made of. with the true sign of that today being in the ceremony a certain discomfort at the attention. about. >> to be singled out very humbling. >>reporter: perhaps yes for a kid who used to get in fights and who almost failed in high school but who out there picked up a live enemy grenade to toss it away to save his comrades. it cost him his right hand but he's alive. rare for medal of honor beginners who usually are honored after death. but there's also this. le roy decided he's not done. an